WPFの操作文件浏览框几种方式

方式1： 使用win32控件OpenFileDialog

 
Microsoft.Win32.OpenFileDialog ofd = new Microsoft.Win32.OpenFileDialog(); 
 
ofd.DefaultExt = ".xml"; 
 
ofd.Filter = "xml file|*.xml"; 
 
if (ofd.ShowDialog() == true) 
 
{ 
 
     //此处做你想做的事 ...=ofd.FileName; 
 
} 

方式2： 使用Forms中的OpenFileDialog控件

WPF中是不能直接使用Forms中的控件的,否则会提示找不到Forms名字控件. 如果你仍然要用, 答案便是添加.net 引用reference

System.Windows.Forms.OpenFileDialog openFileDialog1 = new System.Windows.Forms.OpenFileDialog(); 
 
openFileDialog1.InitialDirectory = "c:\\"; 
 
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"; 
 
openFileDialog1.FilterIndex = ; 
 
openFileDialog1.RestoreDirectory = true; 
 
if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
 
{ 
 
    //此处做你想做的事 ...=openFileDialog1.FileName; 
 
}
 
类似的有文件夹浏览对话框:
 
System.Windows.Forms.FolderBrowserDialog folderBrowserDialog = new System.Windows.Forms.FolderBrowserDialog(); 
 
System.Windows.Forms.DialogResult result = folderBrowserDialog.ShowDialog(); 
 
if (result == System.Windows.Forms.DialogResult.OK) 
 
{ 
 
    tb_FolderPath.Text = folderBrowserDialog.SelectedPath; 
 
} 

方式三: 使用win32 api

BOOL WINAPI GetOpenFileName(  __inout  LPOPENFILENAME lpofn)

使用这种方式, 你需要自己实现LPOPENFILENAME结构和对GetOpenFileName方法就行封装:

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] 
 
public class OpenFileName 
 
{ 
 
    public int structSize = ; 
 
    public IntPtr hwnd = IntPtr.Zero; 
 
    public IntPtr hinst = IntPtr.Zero; 
 
    public string filter = null; 
 
    public string custFilter = null; 
 
    public int custFilterMax = ; 
 
    public int filterIndex = ; 
 
    public string file = null; 
 
    public int maxFile = ; 
 
    public string fileTitle = null; 
 
    public int maxFileTitle = ; 
 
    public string initialDir = null; 
 
    public string title = null; 
 
    public int flags = ; 
 
    public short fileOffset = ; 
 
    public short fileExtMax = ; 
 
    public string defExt = null; 
 
    public int custData = ; 
 
    public IntPtr pHook = IntPtr.Zero; 
 
    public string template = null; 
 
} 
 
public class LibWrap 
 
{ 
 
    // Declare a managed prototype for the unmanaged function. 
 
    [DllImport("Comdlg32.dll",SetLastError=true,ThrowOnUnmappableChar=true, CharSet = CharSet.Auto)] 
 
    public static extern bool GetOpenFileName([In, Out] OpenFileName ofn); 
 
}
 
之后的工作就是实例化、初始化和方法调用了:
 
OpenFileName ofn = new OpenFileName(); 
 
ofn.structSize = Marshal.SizeOf(ofn); 
 
ofn.filter = "Project files\0*.xml"; 
 
ofn.file = new string(new char[]); 
 
ofn.maxFile = ofn.file.Length; 
 
ofn.fileTitle = new string(new char[]); 
 
ofn.maxFileTitle = ofn.fileTitle.Length; 
 
ofn.initialDir = "C:\\"; 
 
ofn.title = "Open Project"; 
 
ofn.defExt = "xml"; 
 
ofn.structSize = Marshal.SizeOf(ofn); 
 
if (LibWrap.GetOpenFileName(ofn)) 
 
{ 
 
    //此处做你想做的事 ...=ofn.file; 
 
}